Abdominal wheel



FIG. 1 is a perspective view of an abdominal wheel showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of the abdominal wheel, which form no part of the claimed design. 

CLAIM The ornamental design for an abdominal wheel, as shown and described. 